Question

III. Fill in the blanks:
1. Grasslands, forest, desert, etc. are the examples of _____
ecosystem
2. Living organisms can survive well only when the physical ______ is not impaired.
3.______ and ________ are recognized to aggravate the environmental degradation.
4. In India, the first oil well was drilled in ______at ______
(Assam).
5. BHC and DDT are ______
6._____ results in soil erosion.​

Answer 1

Answer:

1st) Biome is communities of organisms interacting with one another. It is a particular geographic area in which plants and animals with common characteristics live together. Examples of biome include deserts, grasslands, forests, tundra.Thus, the correct answer is 'Biomes.'

Answered By Radhika.....◉‿◉

2nd) Living organisms can survive well only when the physical environment is not impaired.

answered by radhika.....◉‿◉

3rd) trees trees and forests are recognized to upgrade the environmental degradation

answered by Radhika.....◉‿◉

4th) Digboi

Crude oil was discovered here in late 19th century and first oil well was dug in 1866. Digboi is known as the Oil City of Assam where the first oil well in Asia was drilled. The first refinery was started here as early as 1901.

answered by radhika.....◉‿◉

5th) thetic insecticides under report are DDT. (Dichlor-diphenyl-trichlorethane) and BHC. (Benzene-hexachloride). They, in fact, are. among the outstanding scientific inventions of recent years.

answered by Radhika.......◉‿◉

6th) Running water is the leading cause of soil erosion, because water is abundant and has a lot of power. Wind is also a leading cause of soil erosion because wind can pick up soil and blow it far away. Activities that remove vegetation, disturb the ground, or allow the ground to dry are activities that increase erosion.

answered by radhika.....◉‿◉

I hope you get all the answers by explanation

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Answer 2

Answer:

1. Biomes

2.Health

3.Tree and flowers

4.Digboi

5. BHC = Benzene Hexachloride and DDT = Dichloro Diphenyl Trichloro

6. Soil erosion decreases soil fertility.